I bought these pants to wear during my fieldwork in Texas coastal marshes where there are lots of mosquitoes. I was hoping the tight weave of the material would offer some mosquito protection and still be breathable. I'm happy to say they seem to do both of these things. They even have shock cord in the ankles with cord locks so you can cinch the pant legs around your boots to keep the blood suckers from flying up! Bonus is they are super comfortable and fit me perfectly so they actually look cute instead of dorky like many field pants tend to do. I want to wear them everyday!